“We have just been informed that the US government will no longer be allowing US citizens to travel to the DPRK (North Korea).

“It is expected that the ban will come into force within 30 days of July 27th. After the 30 day grace period any US national that travels to North Korea will have their passport invalidated by their government.”

The move comes a month after Otto Warmbier, the American college student who was arrested and spent nearly 17 months in North Korea, died of severe brain damage with his family in Ohio.